How we calculate our numbers

Across this website we use a range of statistics. The purpose of this section is to provide a more detailed explanation of what those numbers mean. 

As at 31 March 2022​

£25+ billion​ of capital committed or arranged:​ Combining historic activity where UK Green Investment Bank (GIB) or Green Investment Group (GIG) have committed their own funds or arranged third-party capital and / or financing. ​

11+ GW of operational projects​: Combining historic activity where UK Green Investment Bank (GIB) or Green Investment Group (GIG) have committed their own funds or arranged third-party capital and/or financing.

30+ GW in development​: Includes projects being developed directly by GIG or through portfolio companies. Portfolio companies are companies operating as operationally segregated subsidiaries of GIG or companies where GIG has entered a joint venture with another partner. ​

400 renewable energy experts:​ Staff operating under the GIG brand or the brand of one of GIG’s portfolio companies.

Supported 4+ GW of renewable energy projects with PPAs​: Total capacity of renewable energy projects in development, construction or operation where GIG (either directly or via portfolio companies) have contributed equity investment, which is supported by power purchase agreements structured by GIG or its portfolio companies.


Green Impact - As at 31 March 2021​

222,009 ktCO2e greenhouse gas emissions avoidance: Total estimated greenhouse gas emissions avoided over the lifetime of GIG’s investments to date, which comprise new investments into projects within the reporting period, retained projects and exited projects​.

Equivalent to removing nearly 3 million cars from the road: for 25 years, calculation based on standardised petrol vehicle efficiency and mileage.

589,691 GWh​ renewable energy generation: Estimated renewable energy generation over the lifetime of GIG’s investments to date, which comprise new investments into projects within the reporting period, retained projects and exited projects. ​

Equivalent to meeting the electricity needs of over 5.5 million homes: for 25 years, calculation based on country specific data (Enerdata).​

The latest published green impact data can be found in our Progress Reports.  GIG only reports estimated green impact for projects where GIG has provided a binding commitment to make a principal investment at, or subsequent to, the project reaching final investment decision (FID). 

Further details of our methodology for calculating Green Impact are provided in our Green Impact Reporting Criteria .


Note: where reference is made to GIG these statistics include historical Macquarie Capital activity which was integrated with GIB to form GIG in 2017.